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2 years ago

4. What is the solution of the system of equations? y=-2x+5 y=-2x+20

Mathematics

1 answer:

Norma-Jean [14]2 years ago

3 0

The system of equation, y = -2x + 5 and y = -2x + 20, have no solution.

<h3>How to Find the Solution of a System of Equations?</h3>

The solution to a system of equations is the ordered pair of x and y that makes both equations true.

Given the system of equations,

y = -2x + 5 --> equation 1

y = -2x + 20 --> equation 2

Subtract to eliminate variable "y"

0 = 0 + 25

0 = 25 [this is not true]

Therefore, no solution exist for the system of equations.

Thus, we can conclude that, the system of equation, y = -2x + 5 and y = -2x + 20, have no solution.

Learn more about system of equations on:

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Answer:

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Step-by-step explanation:

This is a simple interest problem.

The simple interest formula is given by:

$E = P*I*t$

In which E is the amount of interest earned, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.

After t years, the total amount of money is:

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In this question:

In 15 years, so $t = 15$

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Replacing:

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$30000 - P = P*0.08*15$

$30000 - P = 1.2P$

$2.2P = 30000$

$P = \frac{30000}{2.2}$

$P = 13636.36$

She needs to invest $13,636.36 right now

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3 years ago

Graph 4x + y = 6x - 1<br> Show your work and explain the method used to determine the graph.

Maru [420]

See attachment for the graph of y = 2x - 1

<h3>How to graph the function?</h3>

The equation of the function is given as:

4x + y = 6x - 1

Subtract 4x from both sides of the equation

y = 2x - 1

This means that the equivalent equation of 4x + y = 6x - 1 is y = 2x - 1

So, we plot the graph of y = 2x - 1 to represent the equation 4x + y = 6x - 1

See attachment for the graph of y = 2x - 1

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Explanation:

I'm guessing this is the question you meant to ask:

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